21024016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1657}}^1$

素因数の和:1739

約数の個数: 40

約数和(自身を含む): 44613464

約数和(自身を除く): 23589448

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 1657, 3172, 3314, 6344, 6628, 12688, 13256, 21541, 26512, 43082, 86164, 101077, 172328, 202154, 344656, 404308, 808616, 1314001, 1617232, 2628002, 5256004, 10512008, 21024016]

約数ペア:

[(1, 21024016), (2, 10512008), (4, 5256004), (8, 2628002), (13, 1617232), (16, 1314001), (26, 808616), (52, 404308), (61, 344656), (104, 202154), (122, 172328), (208, 101077), (244, 86164), (488, 43082), (793, 26512), (976, 21541), (1586, 13256), (1657, 12688), (3172, 6628), (3314, 6344)]